Hi Everyone,

I'm trying to incorporate some more materials chemistry-based labs into my intro inorganic chemistry course and have been finding the Teaching General Chemistry - A Materials Science Companion to be a very useful resource. I'm planning to have my students do Experiment 7 in the book (Periodic Properties and Light-Emitting Diodes). However, I'm finding it difficult to find some of the materials suggested in the book, as the vendor part numbers have changed since the book was published in 1993. I could use your help in one of the following ways:

1) Have you run this lab at your institution, and if so, do you have some suggested updated part numbers for the LEDs?

2) It looks like the Institute for Chemical Education at the University of Wisconsin sells an "LED color strip kit," though the kit is currently backordered. Do you know if this kit serves as a replacement of the materials list in Experiment 7?

3) Are there any updated or related labs that I might be able to use instead?

I'm planning to run this lab in mid-April.

I'd appreciate any help you are able to provide!

-Spring